Question

我知道这个问题已被多次询问，但我仍然遇到问题。我有一些非消耗品应用程序购买代码，如果用户留在现场并一次购买它们，则可以正常工作。但是，如果用户离开此菜单并返回该菜单，代码将在完成事务时崩溃。我正在使用cocos2d来实现它的价值。

来自 MKStoremanager.m

-(void) provideContent: (NSString*) productIdentifier
{
    NSLog(@"productIdentifier=%@", productIdentifier);
     nc = [NSNotificationCenter defaultCenter];


        featureAPurchased = YES;
        [nc postNotificationName:@"featureAPurchased" object:nil]; //<--crashes here


    [MKStoreManager updatePurchases];
}

来自 MSStoreObverser.m

- (void) completeTransaction: (SKPaymentTransaction *)transaction {     NSLog(@"completeTransaction");
    NSLog(@"transaction.payment.productIdentifier=%@",transaction.payment.productIdentifier);

    //[[NSNotificationCenter defaultCenter] removeObserver:self];  //<--tried removing observer.  Still crashes

    [[SKPaymentQueue defaultQueue] finishTransaction: transaction];
    [[MKStoreManager sharedManager] provideContent: transaction.payment.productIdentifier];

}

- (void)paymentQueue:(SKPaymentQueue *)queue updatedTransactions:(NSArray *)transactions
{
    NSLog(@"paymentQueue");

    for (SKPaymentTransaction *transaction in transactions)
    {
        switch (transaction.transactionState)
        {
            case SKPaymentTransactionStatePurchased:

                [self completeTransaction:transaction];  //<--Breaks here

                NSLog(@"Purchase was a success -J");
                break;

            case SKPaymentTransactionStateFailed:

                [self failedTransaction:transaction];

                break;

            case SKPaymentTransactionStateRestored:

                [self restoreTransaction:transaction];
                break;
            default:

                break;
        }           
    }
}

我认为问题是NSNotificationCenter观察者没有被正确删除，但我不确定原因。

Answer 1

正如我的评论建议的那样，我们需要删除观察者，以确保我们不会向解除分配的内容发送消息。

- (void)dealloc
{
    [[NSNotificationCenter defaultCenter] removeObserver:self];
}

NSNotificationCenter在应用购买期间发送解除分配的消息

1 个答案: